日本北海道两个咸水湖中寄生在大鳞红鳍鱼Pseudaspius hakonensis上的Limnotrachelobdella okae（Hirudinidae:Piscicolidae）

Q4 Agricultural and Biological Sciences

Species Diversity Pub Date : 2022-09-22 DOI:10.12782/specdiv.27.279

K. Nagasawa, M. Sasaki, H. Matsubara

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引用次数: 2

摘要

在日本北海道鄂霍次克海沿岸的Tofutsu湖和Abashiri湖两个半咸水湖泊中，从hakonensis (Pseudaspius hakonensis, g nther, 1877)的腹鳍和侧体表采集了沿海海鱼水蛭Limnotrachelobdella okae (Moore, 1924)的标本。简要描述了标本的外部形态，并指出这两个湖代表了水蛭在当地的新记录。与沿海海水相似，近岸半咸水湖泊是欧卡藻完成其生命周期的栖息地。在北海道亚北极地区和日本的三个温带地区(本州、四国和九州)之间，该物种的季节性发生可能有所不同。本文从以下几个方面讨论了大型红鳍及其同系物太平洋红鳍Pseudaspius brandtii (Dybowski, 1872)在将活的欧卡菌从沿海海运送到咸淡水和淡水水体中的作用

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Limnotrachelobdella okae (Hirudinida: Piscicolidae) Parasitic on Big-scaled Redfin, Pseudaspius hakonensis (Cypriniformes: Leuciscidae), in Two Brackish Water Lakes, Hokkaido, Japan

Specimens of the coastal marine fish leech Limnotrachelobdella okae (Moore, 1924) were collected from the pelvic fins and lateral body surface of big-scaled redfin, Pseudaspius hakonensis (Günther, 1877), in two brackish water lakes, Lake Tofutsu and Lake Abashiri, on the Sea of Okhotsk coast, Hokkaido, northern Japan. The external morphology of the specimens is briefly described, and the two lakes represent new locality records for the leech. Similarly to coastal marine waters, inshore brackish water lakes are suggested to be a habitat in which L. okae can complete its life cycle. Seasonal occurrence of the species may differ between subarctic Hokkaido and three temperate regions of Japan (Honshu, Shikoku, and Kyushu). The role of big-scaled redfin and its congener, Pacific redfin, Pseudaspius brandtii (Dybowski, 1872), in transporting L. okae alive from the coastal sea to brackish and fresh water bodies is discussed in terms of

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来源期刊

Species Diversity Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： Species Diversity is a peer-reviewed, open-access international journal on all aspects of animal species diversity. Species Diversity is published by the Japanese Society of Systematic Zoology. It is the English-language successor of the Proceedings of the Japanese Society of Systematic Zoology and complements the latter’s Japanese-language continuation, Taxa. e purpose of Species Diversity is to facilitate the international ex change of information about animal species diversity by publishing papers dealing with all aspects of taxonomy, systematics, speciation, biogeography, and life his tory research.